How can i build real time multiplayer rock paper scissors game?

Question

I am a self-taught unity mobile game developer.I made a game called "ruby rain" i dont know anything about networking & databases i want to find the simpliest way to build multiplayer game without Java and C++.Note:Unity's assembler is taking too much memory of phone i am open to new engines,tools and kits which can make it easier.Edit:I hate google play services

Answer 1

c# has built in networking libraries you might want go check out. system.net and system.net
sockets are the main ones. youll also need to learn about port forwarding. https://msdn.microsoft.com/en-us/library/system.net(v=vs.110).aspx
https://github.com/lontivero/Open.NAT